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Definitive VoiceXML™ by David Cuddihy, Adam Hocek

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Appendix C. Form Interpretation Algorithm

The Form Interpretation Algorithm (FIA) drives the interaction between the user and a VoiceXML form or menu.[1] A menu can be viewed as a form containing a single field whose grammar and the filled block are constructed from the choice elements.

[1] This appendix is taken verbatim from the VoiceXML 2.0 Specification and is meant to define VoiceXML's Form Interpretation Algorithm using pseudo-code. While Chapter 2, “VoiceXML essentials,” on page 24 should serve as the more thorough and readable guide to the Form Interpretation Algorithm, this pseudo-code representation should unambiguously define the behavior of a VoiceXML 2.0 compliant interpreter regarding the interpretation of forms.

The FIA must handle: ...

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